I've been to a Sleep Centre but it will be another month until I get the results. That was wiring me up to monitors overnight but I've not had any cortisol testing.
I'm on T3 and much better than T4 but not 100%. Some of this is down to poor sleep and I sleep at the wrong time of the day/night. I feel wide awake at midnight - 3am ish.
I wonder if my cortisol is messed up, in perhaps both in adrenal insufficiency and also producing it at the wrong time of the day/night.
Would this NHS test at Southampton help